Improvement in tuyeres



J.- TH EAT.

Tuyere.

Patented Oct. v2, 1866..

N. PETERS. Phnmmhagnplwr, wnhingxnn. l)4 C.

UNITED STATES Parnu JOHN THF-IAT, OF DETROIT, MICHIGAN.

IMPROVEMENT IN TUYERES.

Speeiication forming part of Letters Patent No. 58,509, dated October S, 1866.

To all whom it may concern:

Be it known that I, JOHN THEAT, of Detroit, in the county of Wayne and State of Michigan, have invented a new and useful Improvement in luyere-Irons for Forges; and I do hereby declare that the following is a full, clear, and exact description thereof, ret'- erence being had to the accompanying drawings, through letters of reference marked thereon, in which- Figure l represents a side elevation of my invention; Fig. 2, a plan or top view of the same; Fig. 3, `a vertical longitudinal section thereof; Fig. 4, a plan of the inner cover or diaphragm; Fig.'5, an inverted view of the outer cover; Figs. 9 and 10 represent the same as Figs. el and 5, with modified form of apertures; Fig. 6, a plan ofthe sliding bottom; Fig. 7, a vertical longitudinal section and an end view of the same/5 Fig. S, a central vertical section of the outer cover.

The same letters of reference occurring in the several figures indicate corresponding parts.

` The nature of my invention consist-s in a novel arrangement and construction of the tuyere for the greater facility of regulating the blast, both lin power and direction; also, in the construction of the rotating cap of the tuyere, so as to conduct the fused slag and dust away from the blast-apertures in and the joints around the said cap or cover.

To enable others to understand the construction and operation of my invention I will proceed to describe it with reference to the drawings, in which- K represents the neck of the tuyere into which the blast pipe or nozzle of the bellows is inserted, and'communicates with a chamber, L, which I make of cylindrical form and enlarged at its upper end, so as to form a shoulder, a, above the aperture of the neck K. On this shoulder is supported a dislgB, perforated with any desired number of holes, b, and with one or more slots, D7 in the arc of ot' a circle, near its periphery, and concentric with said disk, the purpose of which will b e hereinafter more fully explained. This disk is secured in its place by setscrews G, passing through the sides of the cylindrical chamber L, and entering its periphery.

Above the disk B, and also/entering the upper portion of the chamber L, and in contact with said disk, is fitted the cover A, which is formed convex on its upper surface and with a iiange, A', at its upper edge, overlapping the edge ofthe tuyere-iron for the threefold purpose of shedding the fused slag and dust away from the blast-aperture excluding the dirt from these movable portions, which, ifl allowed to work in, would obstruct their operation, and also to prevent the waste of air from the blast. This cover is secured in its place by a set-screw, H, passing through the side of the chamber L, the point of which enters a groove, I, in the periphery of theA 'of blast, as when the prongs E are at one end of the slot D, the central hole, b', onlyT will be open for the passage of the blast, and when they are at the other end of the slots, the three apertures, b, will also be open, and .by this oscillatin g motion of the cover the amount of blast maybe regulated to any desired ext-ent by the lever F.

The lower portion of the chamber L is provided with an aperture, M, and iitted with a sliding bottom, C, which is l represented in Figs. 6 and 7. This bottom, when `pushed in close, closes the aperture M, and, when pulled out to its full extent of motion, the aperture J therein comes opposite the aperture M, and allows the cinders and ashes that may accumulate in the chamberL to pass out, and thus too far, and is difficult then to replace in the A', overlapping the Walls of the mouth of the grooves to close il. 1 therefore Ado not claim tuyere, with the stationary disk B and channit broadly. her L, when constructed und arranged suh-` Htwng thus described 1n y invention, what stantially as and for the purpose set forth. I claim as new, and desire to secure by Lct- JOHN THEAT. ters Patent, is- In presence of- The combination of the convex or conical WM. Y. ATWOOD, cover A, provided with it flange projection,` L. M. FOX. 

